docs: def decrypt_document(self, document_id, encrypted_content):
          """
          Decrypt a previously encrypted content using the secret store keys identified
          by document_id.
  
          Note that decryption requires permission already granted to the consumer account.
  
          :param document_id: hex str id of document to use for encryption session
          :param encrypted_content: hex str -- the encrypted content from a previous
              `encrypt_document` operation
          :return:
              None -- if decryption failed
              str -- the original content that was encrypted previously
          """
          return self._secret_store_client(self._account).decrypt_document(
              remove_0x_prefix(document_id),
              encrypted_content
          )